body can only be seen through a microscope. Physiology Physiology (fiz"e-ol'o-je) is the study of how body and its parts work or functon (physto nature; ology = the study of). Like anatomy, ph ology has many subdivisions. For example, h rophystology explains the workings of the nery system, and cardiac phystology studies the fon tion of the heart.

It seems like you're providing information about physiology and its subdivisions, but there are some typographical errors in the text. Let me clarify and summarize the key points regarding physiology: 1. **Definition of Physiology**: Physiology is the study of how the body and its parts function. The term is derived from two Greek words: "physio," meaning nature, and "ology," meaning the study of. 2. **Subdivisions of Physiology**: - **Neurophysiology**: This branch focuses on the workings of the nervous system. - **Cardiac Physiology**: This area studies the function of the heart. 3. **Importance of Microscopy**: The text mentions that the body can only be seen through a microscope, which highlights the microscopic nature of many physiological processes and structures. If you have specific questions or need further information about physiology or its subdivisions, feel free to ask!